[Controls] Create Edit Mode Experience for Options List Control

[ThomThomson]

Options

The Options List Input Control needs to have an editing experience that allows a user to specify the following items

• multiselect vs single select this should be a slider
• Index Pattern all index patterns should be available
• Field a field list will be captured from the index pattern only in edit mode, only when the editor is opened.
• Default selections all available options from the field should be presented so the dashboard author can select default options.

This is in addition to the generic editing experience for each control which includes inputs for

• Custom Title if no title is given, the embeddable title is used (usually the field name)
• Control Type should be hidden while there is only one type of control registered
• Width settings A triple selection with auto / small / large options perhaps.

Design Work

Much design work has gone into the look and feel of the inline editors for the Options List:

[elasticmachine]

Pinging @elastic/kibana-presentation (Team:Presentation)